General

Engineer's Note

This 16GB DDR4-3200 RDIMM, featuring ECC and registered signaling, is engineered for server platforms running virtualization, in-memory databases, and other mission-critical workloads where data integrity is paramount. Its single-rank x4 configuration optimizes signaling for higher frequencies while maintaining low latency at CL22, ensuring stable performance in dense multi-DIMM server deployments.

Technical Specs & Insights

1. Its balanced capacity enables cost-effective server virtualization, hosting numerous lightweight containers or virtual machines while keeping memory footprint optimized for mid-scale deployments.
2. The elevated bandwidth accelerates in-memory database transactions and real-time analytics, ensuring faster data retrieval under heavy concurrent user loads.
3. ECC protection continuously scrubs and corrects single-bit errors, preserving data integrity in financial and healthcare workloads where silent corruption cannot be tolerated.
4. The registered buffer restores signal clarity across dense multi-DIMM configurations, maintaining stable operation when populating all memory channels in large-scale compute nodes.
5. The x4 DRAM organization tightens error correction granularity, empowering advanced RAS capabilities like Chipkill to sustain uptime even if a full DRAM component fails.

Why These Specs Matter

Designed for the data center, the Samsung M393A2K40EB3-CWEBY is a server-grade DDR4-3200 Registered DIMM, built to eliminate the silent threats that compromise enterprise workloads. Its ECC engine continuously corrects single-bit memory errors—the kind triggered by cosmic radiation that can corrupt financial transactions or silently flip a database index, turning a routine operation into a costly outage. In a dense virtualization cluster running dozens of VMs per node, the registered buffers stabilize signal integrity across multiple DIMMs, so you can populate every channel at full speed without random reboots, directly protecting VM density and uptime. This 16 GB module’s single-rank x4 organization and 3200 MT/s bandwidth feed in-memory databases like Redis or SAP HANA with the low-latency throughput needed to serve millions of queries per second, while the 1.2 V operating voltage drives down power consumption across a fleet—meaning every rack saves measurable energy costs without sacrificing the predictable performance that your users demand. Here, each specification is not just a number; it is a safeguard for business continuity and a lever for scaling efficiently.

Endurance & Reliability

This is server memory: a DDR4-3200 Registered ECC RDIMM (16GB, 1.2V, CL22, Single Rank x4). It provides the reliability and signal integrity required for enterprise workloads. Below are capacity planning guidelines for common server scenarios.

General Virtualization
Memory frequently limits consolidation density. Populate all memory channels symmetrically, installing one 16GB RDIMM per channel as a baseline, which delivers 128GB on an 8-channel platform. Scale by adding a second DIMM per channel (total 256GB) to accommodate more VMs, but be aware of minor speed reduction when running two DIMMs per channel. Balanced population across NUMA nodes prevents performance imbalance.

In-Memory Database
These workloads demand maximum capacity and continuity. Fill every available DIMM slot with 16GB RDIMMs; a 24-slot dual-socket server reaches 384GB. Because in-memory datasets often require terabytes, 16GB modules are best used to cost-effectively build medium-sized nodes. For larger nodes, keep all modules identical per channel and avoid mixing ranks to maintain stable latency and ECC overhead.

High Performance Computing
Sustained memory bandwidth is critical. Install exactly one 16GB DIMM per memory channel to run at the full 3200 MT/s rate without clock-down. A 128GB configuration (8 DIMMs on an 8-channel system) provides high throughput for parallel simulations. Stick to identical single-rank RDIMMs to guarantee uniform access timing and avoid interleave issues during large data transfers.

Verified Compatibility

Strictly tested server RDIMM, compatible with Dell PowerEdge R750, HPE ProLiant DL380 Gen10 Plus, Lenovo ThinkSystem SR650 V2.

FAQ